gui: Combined the SEM/OPT buttons using the same LiveGUIModel
gui: merge conflict resolved
gui: small documentation update
gui: Added no-working view controller to lens alignment tab
gui: update histogram range dynamically if hardware changes bith depth

Some cameras can adjust bit depth (BPP) depending on their settings.
So we need to handle the cases where the histogram ranges change.
gui stream entry: add center/bandwidth text entries for spectrum

more or less copy from the histogram code.